Grind approximately 20gms each of ginger, green chillies and garlic without water, if needed add oil while grinding. You may use gingelly/rice bran/sunflower oil. Put this paste in a bottle and top it up with approx 100ml of oil such that it covers the paste. Keep it aside for 15 days. Soak the rind of one soapnut in a little water and let it stay for a day. Filter this nicely and add more water to make this a litre. To this one litre of soapnut water add 1ml of your 3G's paste. Mix well. Add a few drops of neem oil. Filter and spray on your plants.
This is a very effective pest control remedy which canbe made and kept for use in your gardens. When the oil reduces you can add more oil to top it so as to cover the paste.
Happy Gardening!!!